/*
 * Copyright (c) Hisilicon Technologies Co., Ltd.. 2021-2021. All rights reserved.
 * Description: pwm sample
 * Author: Hisilicon
 * Create: 2021-12-10
 */

/********************************************************************************************/
/* Includes                                                                                 */
/********************************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "uapi_pwm.h"
#include "sample_pwm.h"

/*********************************************************************************************
  Function Implementation
*********************************************************************************************/
static td_void printf_help(td_void)
{
    printf("\nUsage: sample_pwm pwm_num | freq | duty_ratio\n");
    printf("      pwm_num    - The pwm number computing formula is [group*8+bit]. For example, The pwm number of\n");
    printf("                   GPIO24_3 is 195.\n");
    printf("                   The common pwm number is from 0 to 247 on type_v1.\n");
    printf("                   The common pwm number is from 0 to 3 and the led pwm number is 4 on type_v2.\n");
    printf("                   The common pwm number is from 0 to 167 and the led pwm number is 168 type_v3.\n");
    printf("      freq       - The frequency in Hz\n");
    printf("      duty_ratio - The value of duty ratio is from 0 to 1000.\n");
    printf("Example: sample_pwm 195 36000 500\n");
    printf("Note: When gpio is used for pwm function, the pin direction must be output.\n");
}

static td_void wait_quit(td_void)
{
    td_s32 i;

    while (1) {
        printf("enter q to quit\n");
        i = getchar();
        if (i == 'q') {
            break;
        }
    }
}

td_s32 main(td_s32 argc, td_char *argv[])
{
    td_s32 ret, ret1;
    td_u32 pwm_no, freq, duty_ratio;
    uapi_pwm_attr attr = {};

    sample_pwm_check_param(ret, TD_FAILURE, argc != 0x4, goto help);

    pwm_no     = (td_u32)strtoul(argv[0x1], TD_NULL, 0);
    freq       = (td_u32)strtoul(argv[0x2], TD_NULL, 0);
    duty_ratio = (td_u32)strtoul(argv[0x3], TD_NULL, 0);

    sample_pwm_check_param(ret, TD_FAILURE, duty_ratio > 1000, goto help); /* 1000: max duty ratio */

    sample_pwm_func_call(ret, uapi_pwm_init(), goto out);
    attr.pwm_frequency = freq;
    attr.pwm_duty_ratio = duty_ratio;
    sample_pwm_func_call(ret, uapi_pwm_set_attr(pwm_no, &attr), goto deinit);
    sample_pwm_func_call(ret, uapi_pwm_get_attr(pwm_no, &attr), goto deinit);
    sample_pwm_func_call(ret, uapi_pwm_send_signal(pwm_no, 10000, 10000), goto deinit); /* 10000 : wait 10ms */
    sample_pwm_func_call(ret, uapi_pwm_set_enable(pwm_no, TD_TRUE), goto deinit);

    wait_quit();

    sample_pwm_func_call(ret, uapi_pwm_set_enable(pwm_no, TD_FALSE), goto deinit);

deinit:
    sample_pwm_func_call(ret1, uapi_pwm_deinit(), goto out);
    goto out;
help:
    printf_help();
out:
    return ret;
}